Motor



T. WALL; MOTOR.

(No Modem Patented Mar. 18, 1884.

04 PETERS. Phofivlmognpmln Wahwglun. an.

Nrrn STATES THOMAS .VALL, OF SPRINGFIELD, OHIO.

MOTOR.

SPECIFICATION forming part of Letters Patent No. 295,314, dated March 18, 1884-.

Application filed January 14, 1884.

To all whom it 1-way concern:

Be it known that I, THOMAS WALL, of Springfield, in the county of Clarke and State of Ohio, have invented certain Improvements in M0 tors, of which the following is a specification.

My invention relates to that class of motors and like machinery in which a shaft-or wheel is rotated continuously in one direction by a swinging or oscillating movement of a lever carrying aclutch; and the improvement consists in a novel construction of the clutch and the combination thereof with operating devices, as hereinafter explained and claimed.

In the accompanying drawings, Figure 1 is a perspective view of my improved machine; and Figs. 2 and 3, side face views of the hub, showing the lever in different positions.

A great many forms of frictioirclutches have hitherto been made or proposed, alone and in combination with levers or other mechanism, for ii'nparting motion to machinery through their use and operation. Such prior devices have generally consisted either of a toothed hub or disk and pawls or dogs arranged to engage with said teeth, or with friction-pawls, rollers, or clamping devices arranged to lock against the inner face of an annular rim, or to cramp and look upon said rim. Such devices are objectionable, for the reason that the teeth wear rapidly away in use, or that an excessive strain is brought upon the annular rim when the latter constructions are adopted. To overcome these difficulties I adopt the construction shown in the drawings, in which- Aindicates a shaft to which a continuous rotary motionin one direction is tobe imparted, and B a hub or disk secured rigidly thereon. The hub B is encircled by a band or strap, 0, of steel or other strong and elastic metal, both ends of which are secured firmly to lever or arm D, as shown in Figs. 1, 2, and 3. in these figures, the end of that side or face of the lever or arm to which the ends of the band are secured is rounded or curved, so as to present a curved face, a, in the direction of the length of the band, but a plane or straight face transversely thereto, so that if the' lever be tipped or rocked at its outer end while its inner end stands at rest, or practically so, the ends of the band will be drawn oversaid curved face and then be tightened upon the drum or As also shown- (Nn model.)

hub B, so that a continuation of the movement of said lever will cause a rotation of the hub, and of the shaft to which it is secured. The extent of movement required to cause theband to bind upon or clamp the hub is very slight,

so that almost the entire vibration or movement of the lever is utilized to rotate the shaft. In order to insure the proper binding or clamping action of the band, it is necessary that it should be quite flexible and elastic, particularly at the point where it bends over the end of the arm or lever D. In order to render the rotation of the shaft both continuous and regular, the hub or disk 13 is made with a face sufficiently broad to receive two bands, 0, which are kept in position by circumferential flanges Z), formed upon the hub, as shown in Fig. 1, each band being provided with a lever or arm, D, to cause the tightening of the band and the rotation of the shaft, as explained. The two arms D project from the hub in diametricallyopposite directions, and have their curved faces a turned, in opposite directions, as shown in Figs. 2 and 3, or arranged so that if both arms D be moved simultaneously in either direction one band will be tightened and the other will be free,

as will be readily understood upon referring to 2 and 3. The arms D are connected by pitmen or links E to a pendulous lever, F, or to a crank, a vibrating lever, or other device capable of moving the links or pitmen back and forth longitudinally.

In the drawings I have representeda pend ulous lever provided with a foot-piece or stirrup, G, to adapt the device to be operated by foot.

The device is found in practice to give excellent results, each band clamping quickly upon the movement of its arm or lever in one direction, and releasing the hub instantly upon the termination or reversal of such movement. If the band should bind just at the completion of an actuating stroke, the rotation of the hub would carry the band forward sufliciently to cause it to release itself, as will be readily understood. No difficulty of this nature-tl1at is, the momentarybinding and the slight drag or retarding act-ion that would followhas been met with in practice. The wear is very slight and the action perfectly silent.

The hub may be loose on the shaft and belted, geared, or otherwise connected with machinery to be driven.

The precise form of the end of the lever D is not essential, though I prefer that shown.

Having thus described my invention, what I claim is- 1. The herein-described motor, consisting of shaft A, hub 13, bands 0 O, levers D D, attached to the ends of the respective bands and extending in different directions from the hub, pitnien E E, connected with the ends of the levers D D, and a swinging lever, 1?,01' its equivalent, connected with the pitinen, substantially as and for the purpose set forth.

2. In a motor, a clutch consisting of ahub, a flexible band encircling said hub, and a lever attached to the ends of the band and havin g its lower end curved, substantially as shown and described, whereby it is caused to tighten 20 the band upon the hub when moved in one di rection and to loosen it when moved in the reverse direction.

3. In a motor, a clutch consisting of a hub, a flexible band encircling the hub, and a lever, D, the ends of the band being secured to the side face of the lever, substantially as shown and described, whereby a v movement of the leverin one direction is caused to bend or draw the band across its end, and thereby tighten it upon the hub, and a reverse movement of the lever is caused to loosen the band, substantially as set forth.

THOMAS WALL.

Witnesses:

O. B. TROUT, CHASE STEWART. 

